Advanced Study on Remote Measurement of Chemical Composition of Volcanic Gas by Infrared Spectroscopy

红外光谱遥测火山气体化学成分研究进展

• 批准号: 14340168
• 负责人: NOTSU Kenji
• 金额: $ 9.41万
• 依托单位: The University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-14340168/
• 关键词: volcanic gas; remote measurement; infrared absorption spectroscopy; FI-IR; eruption prediction; monitoring of udcauic activity; Aso volcano; Sakurajima vilcao; 太陽散乱光; 赤外発光分析; 赤外光源

Authors have been trying to develop a new remote measuring system to determine chemical compositions of volcanic gases by infrared absorption spectroscopy since early 1990' s, and first succeeded to determine the HCl/S0_2 ratio. Thereafter, more species such as CO, C0_2, COS, HF and SiF_4 could be detected. This research project aims to improve this system in order to apply more commonly, more easily and/or more quickly with keeping higher sensitivity. In 2002, a new FT-IR spectrometer (manufactured by Midac Co.) with high sensitivity was purchased and a new observation system for field use was made up. In 2003, after testing the specification of this system and calibrating each component in the laboratory, field observations were carried out at Aso and Sakurajima volcanoes. In our previous observations, we used hot rocks or hot ground behind the volcanic gas as an infrared light source. Instead, scattered solar light was first applied as an infrared light source, obtaining clear absorption spectra of SO_2 and HCI.

作者一直在尝试开发一种新的远程测量系统，以确定自1990年代初以来通过红外吸收光谱来确定火山气体的化学成分，并首先成功地确定了HCl/S0_2比率。此后，可以检测到更多的物种，例如CO，C0_2，COS，HF和SIF_4。该研究项目旨在改善该系统，以便更常见，更轻松，更快地应用，以保持更高的敏感性。 2002年，购买了具有高灵敏度的新的FT-IR光谱仪（由MIDAC Co.制造），并建立了新的现场观察系统。 2003年，在测试了该系统的规范并校准实验室中的每个组件之后，在ASO和Sakurajima火山进行了现场观测。在以前的观察中，我们使用火山气后的热岩石或热地作为红外光源。取而代之的是，首先将散射的太阳光作为红外光源应用，获得了SO_2和HCI的清晰吸收光谱。

项目成果

Mori T, Notsu K.: "Remote FT-IR monitoring of volcanic plume chemistry at Aso volcano, Japan"Pure and Applied Geophysics. (発表予定).

Mori T、Notsu K.：“日本阿苏火山火山羽流化学的远程 FT-IR 监测”纯粹与应用地球物理学（待提交）。

Notsu K., Mori T., Sumino H.: "High HCl flux Miyakejima volcano, Japan"Geochim.Cosmochim.Acta. 66(S1). A560 (2002)

Notsu K.、Mori T.、Sumino H.：“日本三宅岛火山高 HCl 通量”Geochim.Cosmochim.Acta。

Mori T., Notsu K.: "Ground-based remote FT-IR measurements of volcanic gas chemistry at Sakurajima volcano, Japan"Geochimica et Cosmochimica Acta. 67. S304 (2003)

Mori T.、Notsu K.：“日本樱岛火山气体化学的地面远程 FT-IR 测量”Geochimica et Cosmochimica Acta。

野津憲治, 清水洋(編著): "地球化学講座 第3巻「マントル・地殻の地球化学」"培風館. 308 (2003)

Kenji Nozu、Hiroshi Shimizu（编辑）：“地球化学课程第 3 卷‘地幔和地壳的地球化学’”Baifukan 308 (2003)。

Harnandez P.A., Notsu K., Mori T., other 5 authors: "Carbon dioxide emissions from soils at Hakkoda, north Japan"Journal of Geophysical Research. 108(B4). 2210,doi:10,1029/2002Jb001847 (2003)

Harnandez P.A.、Notsu K.、Mori T.，其他 5 位作者：“日本北部八甲田土壤的二氧化碳排放”地球物理研究杂志。